God rested from his work

Genesis 2:2-3

The first mention of work in the Bible is that God finished the work of creation and rested. I think it's interesting that the all-powerful took a breather. He didn't have to, so why rest? Some have said as an example to us. Mark 2:27 says that the Sabbath was made for humanity, so resting as an example is certainly a possibility. God could have rested in celebration for his "good" and "very good" creation. I think, more than anything, God resting indicates a finiteness to work. God, the ultimate perfectionist, didn't have to redo anything. The work of creation was done. So what lesson to take? As I read other passages, it seems clear that rest is an important part of work. I'm still thinking through any other applications